Evidence map›Paper›PMID 28953994›Full record

ArticleMemorias do Instituto Oswaldo Cruz2017

Morphologic study of the effect of iron on pseudocyst formation in Trichomonas vaginalis and its interaction with human epithelial cells.

Geovane Dias-Lopes, Leonardo Saboia-Vahia, Eliane Trindade Margotti, Nilma de Souza Fernandes, Cássia Luana de Faria Castro, Francisco Odencio Oliveira, Juliana Figueiredo Peixoto, Constança Britto, Fernando Costa E Silva, Patricia Cuervo and 1 more

Open access · diamondAbstract read
In one paragraph

Article in Memorias do Instituto Oswaldo Cruz, 2017. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 13 papers.

0numbers the graph read from it
0cells of the map it votes in
13citing papers in PubMed
1.8field-weighted citation impact, top 17% of its field
1 · What the graph read from it

What it found

Each row is one number read from the abstract, on the scale the paper reported it, with its interval. Left of the dashed line favours the treatment, right favours the comparator. Under each row is the sentence it came from. New to these charts? A ten-minute tutorial.

The abstract states no effect estimate the extractor could read, or names no intervention and outcome on the map, so this paper lights no cell and moves no belief. It is still indexed, cited and linked below.

2 · The registry

The trial behind it

Trials whose registry record cites this paper, or whose number appears in the abstract. A trial that started after this paper was published is citing it as background, not reporting it.

Neither the registry nor the abstract names a trial number. If this is a trial report, that itself is worth knowing.

3 · Its place in the literature

Who cites it

13 citing papers in PubMed, 36 citations in OpenAlex.

  1. Trichomonas vaginalis cathepsin D-like aspartic proteinase (Tv-CatD) is regulated by iron at different levels.Biometals : an international journal on the role of metal ions in biology, biochemistry, and medicine · 2026
    Article
  2. Article
  3. bioRxiv : the preprint server for biology · 2026
    Article
  4. Review
  5. Review
  6. Effect of Trichomonacide 6-Nitro-1International journal of molecular sciences · 2024
    Article
  7. Article
  8. Article
  9. Review
  10. Omics Analyses ofGenes · 2022
    Article
  11. Article
  12. The effect of iron onParasitology · 2020
    Article
  13. Demonstration and Characterization of Cyst-Like Structures in the Life Cycle ofFrontiers in cellular and infection microbiology · 2019
    Article
4 · The record

Corrections and comments

PubMed lists nothing against this paper. Absence here is not a guarantee, only a check that was made.

5 · Who and what money

Authors and funding

11 authors at 5 institutions in 1 country.

Geovane Dias-LopesFundação Oswaldo Cruz-Fiocruz, Instituto Oswaldo Cruz, Laboratório de Biologia Molecular e Doenças Endêmicas, Rio de Janeiro, RJ, Brasil.
Leonardo Saboia-VahiaFundação Oswaldo Cruz-Fiocruz, Instituto Oswaldo Cruz, Laboratório de Pesquisa em Leishmanioses, Rio de Janeiro, RJ, Brasil.
Eliane Trindade MargottiUniversidade Federal de São João Del Rei, Faculdade de Medicina, Departamento de Medicina, São João Del Rei, MG, Brasil.
Nilma de Souza FernandesUniversidade Federal de São João Del Rei, Faculdade de Medicina, Departamento de Medicina, São João Del Rei, MG, Brasil.
Cássia Luana de Faria CastroInstituto de Ensino Superior Presidente Tancredo de Almeida Neves, São João Del Rei, MG, Brasil.
Francisco Odencio OliveiraFundação Oswaldo Cruz-Fiocruz, Instituto Oswaldo Cruz, Laboratório de Ultraestrutura Celular, Rio de Janeiro, RJ, Brasil.
Juliana Figueiredo PeixotoFundação Oswaldo Cruz-Fiocruz, Instituto Oswaldo Cruz, Laboratório de Biologia Molecular e Doenças Endêmicas, Rio de Janeiro, RJ, Brasil.
Constança BrittoFundação Oswaldo Cruz-Fiocruz, Instituto Oswaldo Cruz, Laboratório de Biologia Molecular e Doenças Endêmicas, Rio de Janeiro, RJ, Brasil.
Fernando Costa E SilvaUniversidade Estadual do Norte Fluminense Darcy Ribeiro, Centro de Biociências e Biotecnologia, Laboratório de Biologia Celular e Tecidual, Rio de Janeiro, RJ, Brasil.
Patricia CuervoFundação Oswaldo Cruz-Fiocruz, Instituto Oswaldo Cruz, Laboratório de Pesquisa em Leishmanioses, Rio de Janeiro, RJ, Brasil.
José Batista de JesusFundação Oswaldo Cruz-Fiocruz, Instituto Oswaldo Cruz, Laboratório de Biologia Molecular e Doenças Endêmicas, Rio de Janeiro, RJ, Brasil.
Fundação Oswaldo Cruz · BRFederal University of São João del-Rei · BRFederal University of São João del-Rei · BRInstituição Toledo de Ensino · BRState University of Norte Fluminense · BR

Funding

No grant is acknowledged in the PubMed record.

6 · The paper itself

Abstract

backgroundTrichomonas vaginalis is the aetiological agent of human trichomoniasis, which is one of the most prevalent sexually transmitted diseases in humans. Iron is an important element for the survival of this parasite and the colonisation of the host urogenital tract.

objectivesIn this study, we investigated the effects of iron on parasite proliferation in the dynamics of pseudocyst formation and morphologically characterised iron depletion-induced pseudocysts.

methodsWe performed structural and ultrastructural analyses using light microscopy, scanning electron microscopy and transmission electron microscopy.

findingsIt was observed that iron depletion (i) interrupts the proliferation of T. vaginalis, (ii) induces morphological changes in typical multiplicative trophozoites to spherical non-proliferative, non-motile pseudocysts, and (iii) induces the arrest of cell division at different stages of the cell cycle; (iv) iron is the fundamental element for the maintenance of typical trophozoite morphology; (v) pseudocysts induced by iron depletion are viable and reversible forms; and, finally, (vi) we demonstrated that pseudocysts induced by iron depletion are able to interact with human epithelial cells maintaining their spherical forms. MAIN

conclusionsTogether, these data suggest that pseudocysts could be induced as a response to iron nutritional stress and could have a potential role in the transmission and infection of T. vaginalis.

Indexed as

Epithelial CellsHeLa CellsHumansIron Chelating AgentsMicroscopy, Electron, ScanningMicroscopy, Electron, TransmissionTime FactorsTrichomonas vaginalisIron Chelating Agents

Identifiers

PMID28953994
PMCPMC5607515
OpenAlexW2754318912

What OpenQuestion holds

Textmetadata
LicenceCC BY
Read underepoch 390

Registered trials

None linked

Read under generation 80e0d062 · epoch 390. Bibliography from PubMed, PubMed Central and OpenAlex; grants from NIH RePORTER; trial links from ClinicalTrials.gov; estimates, votes and beliefs from the OpenQuestion graph.